It was recalled that the sweeping of small dipolar loops by gliding dislocations was thought to be one of the mechanisms which led to dislocation pattern formation during cyclic deformation. The individual sweeping event was studied here within the framework of isotropic linear elasticity for an infinite straight gliding segment and a rigid dipolar prismatic loop. The present study took account of the finite size of the loop and of the nature of the gliding dislocation. The conditions for sweeping were quantitatively estimated as a function of the geometrical factors, and the local effective and friction forces. The sweeping mechanism was found to be effective for distances, between the slip planes of the 2 defects, which were smaller than 9 times the height of the dipolar loop.

Elastic Model for the Sweeping of Dipolar Loops. L.P.Kubin, J.Kratochvíl: Philosophical Magazine A, 2000, 80[1], 201-18